北斗-罗兰C组合导航的ASF修正计算与研究  

Calculation & Research on ASF Correction of Loran-C

作　　者：陈秀明[1,2] 李文魁[3] 陈永冰[3] 许江宁[3] 陈洪卿[2] 

机构地区：[1]安徽新华学院,安徽合肥230088 [2]中国科学院国家授时中心,陕西临潼710600 [3]中国人民解放军海军工程大学,湖北武汉430033

出　　处：《宇航计测技术》2009年第3期26-30,共5页Journal of Astronautic Metrology and Measurement

基　　金：国家自然科学基金项目(编号:60374068;40676055)资助

摘　　要：介绍讨论了修正ASF的米林顿法和CLC数值积分法,并用MATLAB编程计算;用米林顿法计算的(SF+ASF),与军标"长波地波传输信道计算方法"计算结果非常吻合;CLC数值积分法计算的结果与英国PaulWilliams的结果也很吻合;而CLC数值积分法计算的(SF+ASF)与米林顿法有较大差别,但在用以推求陆地路径ASF时,二者差别就很小。试验表明,CLC数值积分法有助于复杂地形路径的ASF修正计算。It has been introduced and discussed that the ASF calculation software in Millington method and in a numerical integral method named CLC way has been programmed with MATLAB technique. The（ SF ＋ ASF） got in this Millington method agrees with the result of “Computational Methods of LW Ground-wave Transmission Channels”. The result of（SF ＋ ASF）with CLC numerical integral method agrees with the result showed by Dr. Paul Williams＇ paper. There is larger difference in （ SF ＋ ASF） calculated by in CLC numerical integral method relative to in Millington method,but it has been discovered in further research that there is only a little difference in ASF calculated by them over land path. It has been showed in experiment that the CLC way is useful for ASF calculation in complex terrain paths.

关 键 词：罗兰C ASF修正 电波传播 数值积分法 

分 类 号：TN96[电子电信—信号与信息处理]